1. A chemical bond results from the mutual attraction of the nuclei for electrons.______
2. A nonpolar covalent bond is unlikely to form between two atoms that differ in electronegativitiy.______
3. To draw a Lewis structure, it is not necessary to know bond energies._____
4. Multiple covalent bonds may occur in atoms that contain carbon, nitrogen, or oxygen.______
5. The Lewis structure of methane, CH4, contains 4 covalent bonds.______
6. VSEPR states that the electostatic repulsion between electron pairs surrounding an atom causes a bond to break.______
7. In a polar covalent bond, the electronegativity of the two atoms is zero. ________
8. According to VSEPR theory, the shape of an AB4 molecule with no unshared electrons would be tetrahedral.______
9. Compared with covalent nonds, the strength of intermolecular forces is generally weaker._______
10. In writing a Lewis structure for a polyatomic ion, one electron must be added for each unit of moles.______
11. In Lewis electron-dot structures, the atomic symbol represents atomic number._________
12. Due to the presence of an unshared pair of electrons, the shape of ammonia, NH3, is trigonal pyramidal._______
13. The energy released in the formation of a covalent bond is the difference between zero and the maximum potential energy._______